Wiseco Fully Forged Pistons - RATED AT 800+ HP

Wiseco Pistons are 100% manufactured in the USA. They are one of the highest rated piston manufacturers in the country.

Our custom made Wiseco pistons are rated very high in the street/strip performance industry. Wiseco normally offer several grades of pistons, starting with the lower grade Pro-Tru Street version made with 4032 forged alloy. The next level up would be the professional series that are much more expensive and made from 2618 aircraft alloy and have fully machined crowns rather than the as cast crowns that are on the Pro-Tru series.

They have both of these premium features, 2618 Alloy, and fully machined crowns. All premium grade forged pistons on the market have these two unique features and usuall y cost around $800-$1100 per set.

We prefer the 2618 alloy over the lower cost 4032 alloy. The 4032 alloy may fragment from the effects of detonation and if this happens, it can be very destructive to the engine. Those types of pistons are fine for stock or mild engine builds, but should never be used in  carbureted engines built to high horse power levels.  The forged 2618 alloy piston is much more resistant to the effects of detonation and heat.

We have built approximately 8000 engines using the Wiseco pistons over the past 10 years. The engines have been for street rod and strip use. We have seen no problems, nor have there been any complaints. They are an excellent product in every respect.

Piston to Wall Clearance

Many customers have asked us what size they should bore their block at to allow for a proper piston to wall clearance. The required clearance is built into the piston already. For example if these pistons show a given size such as 4.030 then that is exactly what you will bore the block to. The actual size of the pistons when measured at the skirt, 1/2 inch above the tang will show to be approx. 4.026. The needed clearance is built in. Should you be using these pistons in a marine app. where the boat receives it's water from the lake, then an additional 1.5-2.0 thous. would be added to your final bore size, and some forced induction apps may also require a slight increase in bore size.

These pistons are totally suitable for use with mid level nitrous or blower setups. Extreme level builds that are making hp numbers in the 1000 hp range will require a set of custom made extreme duty pistons.

Compression Height

Since our pistons sit at a taller than normal compression height, you will only have to remove approx. .005"-.010" off the deck surface of a virgin block to achieve a zero deck (flush with the deck surface). This maintains the deck's thickness, making it much stronger than a block that has been cut down .025". The engine will also run a bit cooler with a thicker deck. It's well known that the deck dissipates much of the built up heat an engine generates. This also allows for future deck re-surfacing without compromising the integrity of the block. Most all catalog pistons on the market require cutting the deck surface around .025" to achieve a zero deck. A zero deck is very important as it keeps the quench/squish zone at or near an optimal .040" distance. Be sure and let your machine shop know what the compression height is on these pistons before they machine your deck surface.

Our custom made pistons have a compression height that is .010" taller on BBC pistons, and .015" taller on SBC pistons, as compared to most all of the catalog pistons on the market. We find this to be a very valuable feature.

You may have noticed that our Wiseco custom made forged pistons are referred to as Racing Pistons on the package. This does not mean that the pistons are for racing only. This is a generic term, referring to their ability to be used in high performance applications as well as for street rod use. These pistons are perfectly designed for use on the street, as well as for medium to upper level drag racing.

K1 Crankshaft

The K1 Technologies 4340 Forged crankshaft with 6 counterweights.

K1 Technologies crankshafts are made from 4340 forged steel, core hardened and nitride hardened for optimum strength, increased fatigue life and minimized distortion.

To help ensure consistent quality each crankshaft is magnetic particle tested to ensure it is free of flaws and journal tolerances are held to +/- .0001” to ensure consistent bearing clearances.

We also offer this assembly with the Manley Pro-Series crank. See our upgrades below.

Thrust Clearance

Our choice of rods are the 6.2 inch SCAT COMPETITION SERIES rods with ARP-8740 cap screws.

The Scat Pro-Comp extreme duty I-beam rods should not be mistaken for ProComp rods. These rods are made exclusively by Scat, and have nothing to do with the ProComp company. The critical sizing and installation of the ARP cap screws is performed on a Sunnen machine in the USA by Scat Industries. These rods are excellent for those wanting the extra security offered by a rod with 7/16 ARP cap screws.

Take notice of the design of these rods. They are far superior to conventional style I-beam rods. We are now using this rod in all of our Stage 4 and up SBC engines. We also use this rod in our big block 540/555 engines, making approx. 700+hp

If you do a search on the Scat Pro-Comp rods, you will find a vast amount of info on many car forums. All of the info is 100% positive. These rods are run in engines that not only produce high horsepower levels, but also run at continuous RPM. Notice the general appearance in the pictures. These rods do look impressive. The style is reminiscent of a steel billet rod.

The fact that these rods are incredibly strong and well made, coupled with the fact they are light weight and offer better clearance than any H-Beam rod on the market, made it an easy decision to use them in all of our high horsepower street/strip engines.

Genuine ARP 8740 cap screws.

Before the engine is assembled, we strongly suggest checking the rods on a Sunnen machine for sizing on both ends. We recommend this with any rod regardless of cost or brand. It is not uncommon to find some of the rods requiring a slight bump through the hone for perfection in sizing and roundness. We also offer this kit with a proofed set of rods. This is an excellent choice for those wanting to build the engine on their own.

Total Seal High Performance Rings.

When it comes to building a high-performance engine, every little component matters, and that includes piston rings. At Skip White Performance, we don't cut corners, which is why we use Total Seal High Performance Rings in this rotating assembly kit. These rings aren’t just any off-the-shelf option; they are precision-engineered to maximize both horsepower and longevity.

Now, why Total Seal? Well, the name says it all – they provide a superior seal between the piston and the cylinder wall. A better seal means less blow-by, and less blow-by means more power getting to the crankshaft, not escaping through the exhaust as unburnt gases. And believe me, when you’re pushing an engine to its limits, that extra power makes all the difference. Plus, a tight seal means your oil control is on point, leading to better engine health and fewer oil consumption issues down the line.

I've been in this game a long time, and I’ve tried just about every ring you can think of. Nothing compares to the reliability and performance that Total Seal delivers. Whether you're building a street rod or a track monster, these rings help squeeze every bit of performance out of your engine.

Total Seal’s quality is second to none, and when it comes to my customers, I won’t settle for anything less than the best.

Main and Rod Bearings

KING OR CLEVITE bearings are included, depending on availability. You will receive both main and rod bearings.

Typically we use Clevite bearings, when supplies are low, we've had great luck with KING bearings.

Flexplate

Included, choose from tooth count: 157 or 164

This flexplate will resist cracking. One good telltale in identifying a low quality flexplate is the lack of welding on each side where the plate mates to the ring gear. They usually have a pale grey color to them, as they are not coated, and will rust quickly. Ours are welded on both sides, and are much thicker than an OE plate, and are either zinc dichromate or black powder coated. We would never use the thinner OE style plate on an assembly like this.

WARNING: The crank has a dowel pin installed in it. You must align the flexplate or flywheel to the dowel pin. The assembly was balanced with this pin installed.

Flywheel Upgrade Option

Balancing

We do our own balancing with our state of the art CWT 5500 Series balancers . The CWT 5500 is the ultimate for precision balancing. We now have three of these in our machine shop. We consider this machine to be highly advanced compared to the Hines balancer we once used. We balance every rotating assembly we sell within 2 grams or less at no extra charge. A balance sheet is included with your assembly.

Rust Warning

If you are going to store your rotating assembly or short block kit for any length of time, it is very important that you protect these parts by spraying a light coat of rust preventive substance on all bare metal parts. This is especially important for those storing these parts in a high moisture or humid environment. Very light surface rust is easily removable and will cause no harm, but heavy rust can damage these parts and be very costly to fix.